Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
-0.00157x^(4)+0.03688x^(3)-0.29882x^(2)+1.26325x=0
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random